Abstract: Considering the complication of the control of muhivariable systems with unknown mathematical models, the authors have developed a set set of decoupling rules for such systems, on the basis of the human operating experience. The basic ideas of expert fuzzy control are introduced duced into resulting in a multivariable expert fuzzy control system. The system take into consideration the error information set of each subsystem, and then, based on the information recognize the leading feature. The comprehensive control strategies are presented in this article. Computer simulation study shows that the control schemes developed are both effective and feasible.